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Jhon Gray


Last seen: 10개월 전 |  2018년부터 활동

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질문


cwtfilterbank magnitude linear scale
I am using the cwtfilterbank function to generate a scalogram from a signal. However, the frequencies on the Y-axis of the scalo...

11개월 전 | 답변 수: 0 | 0

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Stratified K-fold validation using crossval funtion
I am trying to customize the "Weighted kNN"-based classification code generated after a 10-fold cross validation on my data usin...

거의 3년 전 | 답변 수: 0 | 0

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Converting row to column in text file
I have a text file with annotation like this I want to shift every alphabet in colum form. Like this. Tried several ...

대략 3년 전 | 답변 수: 1 | 0

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Decomposition of EEG signal using wavelet packet transform?
Hi all, I'm having a bit of a trouble breaking down an EEG signal into these bands using wavelet packet decomposition. I tried...

대략 3년 전 | 답변 수: 0 | 0

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How to assign value in multidimensional variable?
I was trying to assign value in a multidimensional variable. My first code is wroking Here it is: prod = 1; ch = 1; AAA(pro...

3년 초과 전 | 답변 수: 1 | 0

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질문


How to insert axes manually in a RGB image?
I want to use manual axes information in an image. I tried axes image and edit axes after imshow. Both times failed to show the ...

3년 초과 전 | 답변 수: 1 | 0

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Why is activations function not working with custom made CNN model?
I was trying extarct feature from CNN model. I was succesful with series net like alexnet using activation. But it is not wroki...

3년 초과 전 | 답변 수: 0 | 0

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Passing discrete feature along with Image in CNN model
I was performing a binary classification problem. Where each image has corresponding discreate features in an excel sheet. Curre...

3년 초과 전 | 답변 수: 0 | 0

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How to save variable as binary file?
I have a variable dimension double in workspace.This contains 4 individual physiological data in 4 rows. I want to save this va...

3년 초과 전 | 답변 수: 1 | 0

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Is there any way to add cross validation in trainingOptions function while using DNN?
Currently, I am training a CNN model to classify images. I am using splitEachLabel function to split the dataset into two segmen...

3년 초과 전 | 답변 수: 1 | 0

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질문


How to plot a graph along with axes graph?
I want to creat a plot like this. is there any function for this? How to make it?

3년 초과 전 | 답변 수: 1 | 0

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How do I implement Linear regression with leave-one-out cross validation in MATLAB?
I have a data set of 87 variables and 1 outcome where all are continuous. I need to use linear regression with leave-one-out cro...

거의 4년 전 | 답변 수: 2 | 0

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Why does stepwiselm function output NaN with model interactions?
I was doing stepwise regression and implementing stepwiselm in commant line mdl = stepwiselm(tbl,'interactions'). My dimension o...

거의 4년 전 | 답변 수: 1 | 0

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Optimized code for loop, If-statement for large dataset
I was hoping to delete some certain rows using condion. My data is in double format (790127*24) I approximate the total code nee...

거의 5년 전 | 답변 수: 1 | 0

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How do I apply PCA (Principal Component Analysis) on single Channel ECG data?
I have one channel ECG signals in a variable let, X(double) and I want apply PCA (Principal Components Analysis) on all of them ...

거의 5년 전 | 답변 수: 1 | 0

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Why do I get the error "Undefined function or variable" using cwtfilterbank ?
I am receiving the following error message while using "cwtfilterbank". How can I resolve this issue? I am using MATLAB 2017b. ...

거의 5년 전 | 답변 수: 1 | 0

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How can I load .psv file to MATLAB?
I have downlaoded datase from PhysioNet/Computing in Cardiology Challenge 2019. Here all the data are in .psv format. Can anyone...

거의 5년 전 | 답변 수: 2 | 0

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How can I create table from matrix?
I have a matrix like this and I want to create a table with a specific heading of each column. <</matlabcentral/answers/upl...

대략 6년 전 | 답변 수: 2 | 0

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Add two numbers
Given a and b, return the sum a+b in c.

대략 6년 전

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Column Removal
Remove the nth column from input matrix A and return the resulting matrix in output B. So if A = [1 2 3; 4 5 6]; and ...

대략 6년 전

문제를 풀었습니다


Select every other element of a vector
Write a function which returns every other element of the vector passed in. That is, it returns the all odd-numbered elements, s...

대략 6년 전

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Triangle Numbers
Triangle numbers are the sums of successive integers. So 6 is a triangle number because 6 = 1 + 2 + 3 which can be displa...

대략 6년 전

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Make a checkerboard matrix
Given an integer n, make an n-by-n matrix made up of alternating ones and zeros as shown below. The a(1,1) should be 1. Examp...

대략 6년 전

문제를 풀었습니다


Find the sum of all the numbers of the input vector
Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...

대략 6년 전

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Make the vector [1 2 3 4 5 6 7 8 9 10]
In MATLAB, you create a vector by enclosing the elements in square brackets like so: x = [1 2 3 4] Commas are optional, s...

대략 6년 전

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Times 2 - START HERE
Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

대략 6년 전